APA (7th ed.) Citation

Karlsen, R. Unmanned Systems Technology XX. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Karlsen, Robert. Unmanned Systems Technology XX. SPIE Digital Library.

MLA (8th ed.) Citation

Karlsen, Robert. Unmanned Systems Technology XX. SPIE Digital Library.

Warning: These citations may not always be 100% accurate.